Copy-holder for type-writers.



A'. BLUM COPY HOLDER FOR TY-PE WRITERS APPLICATION FILED AUG-14.1914.-

Patented Dec. 25, 1917.

v4, SHEETS-SHEET 1- ATTORNEY INVENTOR A. BLUM.

COPY HOLDER F08 TYPE WRITERS.

APPLICATION man AUG. 14. I914.

Patented Dec. 25, 1917,

4 SHEETSSHEET 2- WITNESSES. @M J.

ATTORNEY A. BLUM. COPY HOLDER FOR TYPE WRITERS. APPLICATION FILED AUG-1914- Patented Dec. 25,1917.

WITNESSES:

A TTOR/VEY A. BLUM COPY HOLDER FOR TYPE WRITERS.

APPLICATION FILED AUG.14.19I4.

1,251,329. Patented D66. 25,1917.

4 SHEETS-SHEET 4.

WITNESSES.

ABRAHAM BLUM, OF SAN FRANCISCO, CALIFORNIA.

COPY-HOLDER FOR TYPE-WRITERS.

Specification of Letters Patent.

Patented Dec. 25, 1917.

Application filed. August 14, 1914. i Serial No. 856,829.

To all whom it may concern Be it known that I, ABRAHAM BLUM, citizen ofthe United States of America, residing at No. 21 Flood avenue, SanFrancisco, in the county of San Francisco and State of California, haveinvented certain new and useful Improvements in Copy-Holders forType-VVriters; and I do hereby declare the following to be a full,clear, and exact description of the, invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to a copy holder and line indicator especiallydesigned for attachment to typewriters.

The invention has for its object to provide a copy holder of simple andefficient construction embodying means whereby the same may be quicklyand reliably secured in operative position upon the frame of atypewriter.

Another object is the provision of an arm constituting an indicator andhaving connection with suitable operating means whereby the typist maymove the indicator arm downwardly as the work supported by the holder istranscribed.

Another object is the provision of manually operable means for releasingand automatically moving the indicator arm to its initial position.

With these and other objects in view, the invention consists in thenovel construction, arrangement and formation of parts as will behereinafter specifically described, claimed and illustrated in theaccompanying drawings, in which:

Figure 1 represents a side elevation of the copy holder attached to atypewriter, the latter'being shown in dotted lines.

Fig. 2 represents a perspective view of.

the copy holder removed.

Fig. 3 represents a front elevation of the copy holder partly brokenaway.

Fig. 4 represents an enlarged side elevation thereof, partly brokenaway.

Fig. 5 represents an elevation on the opposite side of the holder,partly broken away.

Fig. 6 represents a top plan view, partly broken away.

Fig. 7 represents an enlargedside elevation of the holder, partly brokenaway, de-.

tached.

Fig. 8 represents an enlarged front elevation, partly in section, of theframe structure of the holder.

Fig; 9 represents a top plan view, partly broken away, of the lowerportion of the frame structure of the holder, showing in detail theadjustable securing means.

Fig. 10 represents a side elevation of the latch bar and pawl releasingmember removed.

, Fig. 11 represents a rear elevation of the rack bar and pawl releasingmember removed.

Fig. 12 represents an enlarged detail view, partly broken away, of thespring operating the indicator.

Fig. 13 represents a diametrical sectional view through the spring andcasing therefor.

Fig. 14 represents a top plan view of the spring mechanism.

Fig. 15 represents a top plan view of the pulley.

Fig. 16 represents a side elevation of the pulley, and

Fig. 17 represents a rear elevation of the guide member for the rackbar.

Fig. 18 represents a top plan view of the guide member.

Referring to the drawing in detail, where in similar-reference numeralsdesignate. corresponding parts throughout the several views, thenumerals 20 and 21 indicate a pair of L shaped bars, having the adjacentends overlapped. One of the overlapped ends of the members 20 and 21 isprovided with a threaded opening receiving the wing bolt 22, 'slidablymounted within a slot formed longitudinally in the other member, wherebythe L. shaped bars 20 and 21 may be secured in adjusted position. Theparallel ends of the. bars 20 and 21 are adjustably connected by bars 23and a wing bolt 24:.

The free extremities of the bars 20 and 21 i projecting flange 30 at itslower edge adapt-. ed to support the note book of the oper ator. Theplate 29 is provided centrally with a depending portion 31 to which ispivotally secured the spring actuated gripper 32 operating against thetop face of the plate 29 and in a cutaway portion formed in the flange30 for holding the copy or sheet in position on the supporting'plate 29.

A guide 33 is secured to the rear face of the plate. 29 adjacent one ofits vertical edges and is provided in its rear face with a channel 34formed with inwardly diverging walls receiving the similarly shapedprojection 35 formed longitudinally of the rack bar 36 formed withlaterally and outwardly projecting teeth 37. A spring 37 is secured tothe rear face of the rack bar 36 and carriesan arm 38 constituting aline indicator. The tension of the spring 37 normally retains the arm 38in sliding contact. with the front face of the plate 29, but issufficiently flexible to permit the insertion of a relatively thickobject between the arm and the plate.

A shaft 40 is hingedly secured to the plate 29 in spaced relation to therack bar 36, and one end of a spiral spring 41 is permanently securedthereto. The opposite extremity of the spiral spring 41 is securedinteriorly of a cylindrical casing 42 rotatably mounted on the shaft 40and provided with a circumferential channel 43 receiving the flexiblestrip 44 secured at one end to a post 45 secured transversely in thecasing 42 and secured at its opposite extremity to an eyebolt 46 carried by the upper extremity of the rack bar 36. A pulley 42 is rotatablymounted above the rack bar 36, and provided with a circumferentialchannel 43 to act as a guide for the flexible strip 44. The tension ofthe spring 41 normally retains the rack bar 36 in elevated position, andsaid rack bar is normally locked against the action of the spring by apawl 47 secured to the rear face of the plate 29.

A shaft 48 is mounted for vertical sliding movement on the rear face ofthe plate 29 in suitable bearings 49, and is normally retained inelevated position by the tension of a spring 50 coiled about the medialportion of the shaft 48 and secured at one end to said shaft and at theopposite end to the bearing 49, The shaft 48 carries adjacent its lowerextremity a sleeve 51 to which is pivotally secured a pawl 52 normallyretained in en gagement with the teeth 37 of the rack bar 36 by thetension of a spring 53. An abutment 48 is secured to the rear face ofthe plates 29 for limiting the upward movement of the shaft 48.

An arm 55 is pivotally supported at one end. no the rear portion of theframe structure 27 and is connected with the operating lever 56 by alink- 57 The operating lever 56 extends forwardly to a point adjacent tothe keys'of thetypewriter, and is provided with a suitable operating key58. Theforward extremity of pivoted arm 55 1S pivotally secured with thelower reduced extremity of the vertically movable shaft 48,

whereby when the operating lever 56 is depressed the shaft 48 is moveddownwardly through the link 57 and the interposed arm 55.

A pawl releasing bar 59 is pivotally secured at 60 to the lowerextremity of the rear face of the rack bar 36 and extends upwardly onsaid rack bar. A handle 61 is rigidly secured to the bar 36 and adjacentthe upper end thereof, and a hand lever 62 is pivotally secured at 63 onthe rear face of said rack bar below the handle 61. The inner extremityof the hand lever 62 is provided with a cam 64 engaging the releasingbar 59, which latter is normally retained inwardly of the points of theteeth 37 by the tension of a spring 65 secured at its upper end to thehand lever 62 outwardly of the pivotal axis of the-latter and at itslower end to the medial portion of the releasing bar 59. W hen the handlever 62 is lifted the bar 59 is swung outwardly toward the points ofthe teeth 37 engaging the pawls 47 and 52, thus releasing the latch bar36 and permitting the latter to move to its initial or elevatedposition, carrying therewith the indicator arm 38.

In use, the holder is attached to the typewriter 26, as illustrated inFig. 1, and the book or sheet containing the matter to be read or eopiedis; positioned on the plate 29 and supported by the forwardly directedflange 30 and spring actuated gripper 32.. As the matter on theseverallines of the book or sheet are copied the line indicator 38- is moveddownwardly by depressing the lever 56, the movement of the lever 56being transmitted through the link 57, arm 55, shaft 48, pawl 52, rackbar 36 to the indicator 38; When the operating lever 56'is released itis automatically returned to its normal position by the tension of thespring 50.- The movement of the operating lever 56 andthe coiiperatingparts is limited by a set screw 68 secured to the forward extremity ofthe L shaped'bar 20. When it is desired to move the indicator 48 to itsinitial position, the handles 61 and 62 are gripped by the operator,lifting the lever 62 andswing ing the release bar 59 outwardly by the action of the cam 64.- The outward movement of the releasing bar 59disengages the pawls 47 and 52 from the teeth 37 ofthe rack bar 36 andpermits the rack bar and indicator 38- to moveupwardly under theinfluence of'the spring 41.

hat I claim is:

1. A copy holder comprising a frame, a plate secured to the frame, arack bar slidably carried by the plate, spring means normally retainingthe rack bar in elevated-pd sition, a shaft slidably mounted on theplate,

spring means normally retaining the shaft in elevated position, means todepress the shaft, :1 spring pressed pawl pivoted to the shaft andengaging the rack, a second pawl pivotally secured to the plate andengaging the rack bar, a releasing arm pivoted to said rack bar forengaging both pawls, and means carried by and movable with the rack barto force said arm into engagement with the pawls to release the rack barand per mit the latter to move outwardly under the influence of thefirst-mentioned spring means.

2. A copy holder comprising a frame, a plate secured to the frame, arack bar slidably carried by the plate, spring means normally retainingthe rack bar in elevated po sition, a shaft slidably mounted on saidplate, spring means normally retaining the shaft in elevated position,means to depress said shaft, a spring pressed pawl pivoted to the shaftand engaging the rack bar, a second pawl pivoted to the plate engagingsaid rack bar, a releasing arm pivoted to the rack bar for engaging bothpawls, a hand lever pivotally secured to the rack bar and movabletherewith, and a cam carried by the carried by said plate, spring meansto nor mally hold said rack bar in elevated position, a shaft slidablysupported on said plate, spring means normally tending to elevate saidshaft, means to depress said shaft,

a spring pressed pawl pivoted to the shaft and engaging the rack, asecond pawl pivoted to the plate and engaging the rack bar, a releasingarm pivoted to the rack bar for engaging both pawls, a handle rigidlysecured to the rack bar and movable therewith, a lever pivotally securedto the rack bar below the handle, a cam carried by the lever forengaging and swinging the releasing arm to disengage the pawls from therack bar, and means normally retaining the hand lever in inoperativeposition.

In testimony whereof I aiiix my signature in presence of two witnesses.

ABRAHAM BLUM.

Witnesses:

OSBORNE SMEDSTAD,

SID. J. PALMER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of ratentl,

Washington, D. G.

